Attempts to prevent inactivity detection and overrides visibility API on all websites. Use responsibly and with caution.
Additional Information for Global Anti-Inactivity Script
Detailed Description
This UserScript is designed to prevent websites from detecting user inactivity or knowing when the browser tab has lost focus (e.g., when you switch tabs or minimize the window). Its primary goal is to help maintain active sessions, prevent automatic logouts due to inactivity, stop "Are you still there?" prompts, and potentially keep media playing on websites that pause content when the tab is hidden or loses focus based on these specific detection methods.
The script employs several techniques simultaneously:
Blur Event Prevention: It intercepts blur events on the window and document, attempting to stop them from propagating. This aims to prevent the page's scripts from realizing that the tab or window is no longer the active one.
Visibility API Override: It forcefully sets the document.visibilityState property to always return 'visible', regardless of the tab's actual state. It also attempts to block any new scripts from listening for the visibilitychange event, further masking the tab's true visibility status from the website.
Activity Simulation: The script periodically simulates user interactions by dispatching synthetic mousemove and keypress events within the page. This simulated activity is intended to reset inactivity timers that rely on detecting keyboard or mouse input. The frequency of this simulation can be adjusted via the simulateActivityInterval variable within the script's code.
Actual Activity Tracking: To avoid unnecessary simulation while you are actively using the page, the script listens for genuine user input events (like mouse movements, clicks, key presses, scrolling). When real activity is detected, it resets an internal timer, delaying the next simulated event until a period of genuine inactivity has passed.
By combining these methods, the script endeavors to create the appearance of continuous user presence and engagement on the webpage.
Instructions for Use
Install a UserScript Manager: You need a browser extension capable of running UserScripts. Popular choices include Tampermonkey, Violentmonkey, or Greasemonkey (depending on your browser). Install one of these extensions first.
Install the Script:
If you obtained this script from a site like Greasy Fork镜像, there will usually be an "Install" button. Click it, and your UserScript manager should prompt you to confirm the installation.
If you have the script code directly, open your UserScript manager's dashboard (usually accessible via its browser icon), choose the option to create a new script, and paste the entire code into the editor. Save the script.
Configuration (Optional):
The script includes a simulateActivityInterval variable near the top (set to 60 * 1000 milliseconds, which is 60 seconds, by default). You can edit the script via your UserScript manager's dashboard to change this value if needed. A lower value means more frequent simulation, while a higher value means less frequent. The default is generally a reasonable starting point.
Enable/Disable: The script is configured with @match *://*/* to run on nearly all websites automatically after installation. You can manage its execution through your UserScript manager's interface. You can typically disable it entirely, or sometimes configure exclude rules if it causes problems on specific sites, directly within the manager's settings or dashboard. It is highly recommended to know how to disable it quickly.
Important Warnings and Considerations
High Risk of Website Conflicts: This script modifies fundamental browser behaviors (event handling, Visibility API). Running it globally (@match *://*/*) means it will affect every website you visit. This carries a significant risk of interfering with legitimate website functions, potentially breaking sites partially or entirely. You might encounter login issues, non-functional buttons, broken layouts, or other unexpected problems.
Performance: While generally lightweight, injecting and running this script on every single page adds a small, constant overhead to your Browse.
Not Foolproof: This script targets common client-side detection methods. It cannot prevent server-side inactivity timeouts (based on lack of network requests). Furthermore, sophisticated websites might use different detection techniques that this script does not counter.
Terms of Service Violations: Using automated scripts to bypass inactivity detection or maintain sessions might violate the Terms of Service of some websites, potentially leading to account restrictions. Use this script responsibly and ethically.
Debugging Issues: If websites start behaving incorrectly, remember that this global script could be the cause. Try disabling it first when troubleshooting problems.
Recommendation: Due to the high potential for conflicts, consider modifying the @match directive to target only the specific websites where you genuinely need this functionality, rather than running it globally. This significantly reduces the risk of unintended side effects on other sites.
Use this script with caution and awareness of its potential impact.
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